Edwaed c



(No Model.)

B. 0. DEAN.

ANTI FRICTION ROLLER.

No. 365,506. Patented June 28, 1887.

II; I

I wua vwo'c 6. X 313M (M ro z UNITED STATES PATENT OFFICE.

EDWARD G. DEAN, OF WASHINGTON, DISTRICT OF COLUMBIA.

ANTI-FRICTION ROLLER.

. Y a 4 SPECIFICATION forming part of Letters Patent No. 365,506, datedn 28. 87-

Application filed December a, 1886. Serial No. 222,453. (No model.)

T0 at whom it may concern-.-

Be it known that I, EDWARD G. DEAN, a citizen of the United States,residing at Washington, in the District of Columbia, have inventedcertain new and useful Improvements in Anti- Friction Rollers; and I dodeclare the following to be a full, clear, and exact description of theinvention,such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanyin g drawi n gs, and to the letters of reference markedthereon, which form apart of this specification. v

This invention relates to certain improvementsivin anti-frictionrollers, and it has forits objects to provide a roller that insuresduranions or journals D, which bear in annular grooves E in the sides A.It can be seen by' the drawings that the rollers are concave at theircenters, having at the ends a narrow bearingsurface which rolls upon thesolid core,

causes them to roll upon the solid core and upon their trunnions in theannulangrooves, the most of the strain being upon the surface of thesolid core, the trunnions of the rollers serving merely as guides in theannular grooves.

I do not limit myself to the use of this invention to cable roads; butit can be adapted to other uses, such as blocks and tackles, pulleys,8m.

Having thus fully described my invention, What I claim, and desire tosecure by Letters Patent, is-

The combination, with the sides A, having abutting solid cores B,-andsecured together by transverse bolts, of the anti-friction rollersprovided with journals D, arranged totravel in annular grooves in thesides A, and having concave surfaces over which a traveling cable orbelt may pass, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

EDWARD C. DE AN.

' Witnesses: I

EDWIN T. YEWELL, W. S. COLE.

